topic

• Administrative and political divisions1
• Charts, diagrams, etc1
• Copper mines and mining1
• Floods1
• Geology1
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name

• Gannett, Henry, 1846-19142
• Geological Survey (U.S.)2
• Ackerman Lithr1
• Brooks, T. B. (Thomas Benton), 1836-19001
• Chlatter, W. S1
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collection

• Maps of North America9
• Maps of Africa1

place

• Colorado2
• Michigan2
• United States2
• Arizona1
• Conemaugh Valley1
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genre

• Maps9
• Topographic maps3
• Geological maps2
• Aerial views1
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publisher

• U.S. Geological Survey2
• A.Y. Lee1
• Ditta editrice Artaria di Ferd. Sacchi e figli1
• E. Besley & Co., Publishers1
• Geographical Institute, Baron F.W. von Egloffstein1
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division

type

• cartographic10
• still image1
• text1